A regulating valve with good noise reduction performance and a method of using the same

Abstract

This invention discloses a regulating valve with good noise reduction performance and its usage method, including a valve body and connecting pipes. Two connecting pipes are provided, each connected to one side of the valve body. This invention relates to the field of regulating valve technology. This regulating valve with good noise reduction performance, by incorporating a noise reduction and impurity removal mechanism, a flow diversion and discharge mechanism, and a limiting mechanism between the valve body and the connecting pipes, allows the valve body to remove impurities from the interlayer between the first and second noise reduction covers during alternating start and stop operations. This is achieved through the coordinated operation of the noise reduction and impurity removal mechanism, the flow diversion and discharge mechanism, and the limiting mechanism, preventing impurities from clogging the interlayer and affecting the flow diversion and noise reduction effect of the first and second noise reduction covers on the fluid medium. Furthermore, while removing impurities from the interlayer between the first and second noise reduction covers, it also seals, diverts, and discharges a portion of the fluid medium containing mixed impurities.

Description

Technical Field

[0001] This invention relates to the field of control valve technology, specifically to a control valve with good noise reduction performance and its usage method. Background Technology

[0002] A control valve is a control device that controls the correct distribution and control of flowing media. This device is mostly used in factories to control fluids in pipelines. Although control valves can conveniently distribute and control the flow of media to the required purpose, they inevitably have shortcomings in use. For example, when a control valve throttles fluid, the flow velocity at the throttling orifice rises rapidly as the fluid passes through the control valve. According to the law of conservation of energy, the increase in velocity will inevitably cause a drop in pressure. If the pressure drops below the saturated vapor pressure of the liquid at that temperature, the medium will vaporize and decompose into gas, forming a two-way flow of gas and liquid, and the valve will experience flashing. When the medium's velocity decreases after passing through the regulating valve, the medium pressure begins to rise. When the rising pressure exceeds the saturated vapor pressure, the medium stops vaporizing, and the bubbles in the liquid turn back into liquid. According to fluid dynamics, the pressure inside the bubbles is close to infinity at this time, which forces the bubbles to burst and form a powerful pressure shock wave. At the same time, the cavitation-generated bubbles burst and form a powerful shock wave. The powerful bursting pressure impacts the internal components of the regulating valve, causing the core valve seat surface to be eroded into an irregular concave honeycomb pattern in a short time, and causing severe vibration and high-frequency noise.

[0003] In the prior art, in order to eliminate the problems of flash cavitation and the high-frequency noise generated by flash cavitation, a noise reduction sleeve is added to the valve body. The sleeve has multiple small holes, and the noise reduction sleeve is usually set in multiple layers to form multiple throttling layers. The small holes of adjacent noise reduction sleeves are staggered. When the fluid passes through, the pressure drop is distributed by each layer of sleeve, and the flow rate is reduced. For incompressible fluids (liquids), this can prevent the occurrence of flash cavitation.

[0004] While existing control valves can effectively eliminate flash cavitation and the dust, noise, and vibration generated by the collapse of cavitation bubbles by adding noise-reducing sleeves, this method inevitably has shortcomings. For example, the control valve lacks a mechanism for removing impurities from the sleeves, resulting in the accumulation and scaling of impurities in the interlayer between the sleeves. This reduces the effectiveness of the sleeves compared to the actual effect, ultimately reducing the noise reduction effect. To avoid such problems, a control valve with good noise reduction performance and its usage method are proposed to solve the existing problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a regulating valve with good noise reduction performance and its usage method. It solves the problem that when the regulating valve uses a noise reduction sleeve for noise reduction, the lack of a cleanup mechanism can lead to blockage of impurities between the sleeve and the sleeve interlayer, resulting in a reduction in the final noise reduction effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a regulating valve with good noise reduction performance, comprising a valve body and connecting pipes, wherein two connecting pipes are provided, and the two connecting pipes are respectively connected to both sides of the valve body; a pneumatic regulating mechanism is provided on the top of the valve body; a valve stem is movably provided inside the pneumatic regulating mechanism, and one end of the valve stem slides and extends into the interior of the valve body; a noise reduction and impurity removal mechanism is provided inside the valve body; a flow drainage mechanism is provided between the noise reduction and impurity removal mechanism and the valve body; and a limiting mechanism for use in conjunction with the flow drainage mechanism is provided between the valve body and the valve stem.

[0007] Preferably, the noise reduction and impurity removal mechanism includes a first noise reduction cover, which is fixedly disposed at the top of the valve body cavity. A second noise reduction cover is fixedly connected to the top of the valve body cavity and inside the first noise reduction cover. Both the second and first noise reduction covers have a plurality of diversion noise reduction holes on their surfaces. A sealing block is fixedly connected to the bottom of the valve stem and inside the second noise reduction cover. A spiral scraper for use with the sealing block is slidably disposed between the first and second noise reduction covers. A first spiral sealing strip for use with the spiral scraper is fixedly disposed on the inner surface of the first and outer surfaces of the second noise reduction cover. A second spiral sealing strip for use with the sealing block is fixedly connected to the inner surface of the second noise reduction cover. Fixing plates are fixedly connected to the front and rear sides of both sides of the sealing block. One side of the fixing plate penetrates the second noise reduction cover and is fixedly connected to the side of the spiral scraper cavity. Guide grooves for sliding adaptation to the fixing plates are provided on the front and rear sides of both sides of the second noise reduction cover.

[0008] Preferably, the drainage mechanism includes a collection box, which is fixedly disposed at the bottom of the valve body. The bottom of the collection box has a discharge port. A sealing block adapted to the discharge port is slidably disposed inside the collection box. A traction ring is fixedly connected to the top of the sealing block by a bracket. A push-pull rod is fixedly connected to the bottom of the sealing block. One end of the push-pull rod passes through and slides into the interior of the collection box. A conical sealing head is fixedly connected to the end of the push-pull rod that extends into the interior of the collection box. A drainage port adapted to the conical sealing head is disposed at the bottom of the valve body cavity. A lifting frame adapted to the traction ring is fixedly connected to the bottom of the conical sealing head. A separation mechanism is provided between the valve body and the right-side connecting pipe.

[0009] Preferably, the separating mechanism includes a drive rod, which is rotatably mounted on the top of the right connecting pipe via a bearing, with one end of the drive rod extending into the interior of the right connecting pipe. A valve plate is fixedly connected to the end of the drive rod extending into the interior of the right connecting pipe. A driven bevel gear is fixedly connected to one end of the drive rod and located at the top of the right connecting pipe. A rotating shaft is rotatably connected to the top of the valve body via a bearing. A master bevel gear meshing with the driven bevel gear is fixedly connected to one end of the rotating shaft, and a gear is fixedly connected to the other end of the rotating shaft. A tooth pressure plate meshing with the gear is fixedly connected to one side of the valve rod via a bracket.

[0010] Preferably, the limiting mechanism includes a mounting frame, and two mounting frames are provided. Both mounting frames are fixedly mounted on the top of the valve body by a bracket. A tension spring is fixedly connected to the inner wall of the mounting frame. One end of the tension spring is fixedly connected to a locking block that matches the gear. A pressing frame is elastically mounted on the top of the valve body by a bracket. An inclined block is fixedly connected to the top and bottom of one side of the pressing frame. A movable plate that matches the inclined block is fixedly connected to one side of the locking block. A pressing vertical plate that matches the pressing frame is fixedly connected to one side of the toothed pressing plate by a bracket.

[0011] Preferably, the pneumatic adjustment mechanism includes an air storage chamber, which is fixedly mounted on the top of the valve body by a bracket. A pressure cap is slidably disposed inside the air storage chamber, and the top of the inner cavity of the pressure cap is fixedly connected to the top of the valve stem. A telescopic spring is fixedly connected between the top of the inner cavity of the pressure cap and the bottom of the inner cavity of the air storage chamber, and two telescopic springs are symmetrically arranged. An airflow control solenoid valve is fixedly connected to the top of the valve body, and an air guide pipe is connected between the airflow control solenoid valve and the air storage chamber.

[0012] Preferably, a first limiting sleeve is fixedly connected to the top of the valve body via a bracket, a first return spring is fixedly connected to the inner wall of the first limiting sleeve, a first telescopic rod is fixedly connected to one end of the first return spring, and one end of the first telescopic rod is fixedly connected to the rear side of the extrusion frame via a bracket.

[0013] Preferably, a second limiting sleeve is fixedly connected to both sides of the bottom of the collection box, a second return spring is fixedly connected to the inner wall of the second limiting sleeve, a second telescopic rod is fixedly connected to the bottom end of the second return spring, and the two second telescopic rods are fixedly connected to the two sides of the bottom of the sealing block respectively through brackets on opposite sides.

[0014] This invention also discloses a method for using a regulating valve with good noise reduction performance, specifically including the following steps:

[0015] S1. When the valve body is closed, the airflow control solenoid valve is activated. The airflow control solenoid valve supplies air and pressurizes the air storage chamber through the air guide pipe. After the air storage chamber is pressurized, the pressure plate will descend and drive the valve stem to move. The descent of the valve stem will drive the sealing block and the spiral scraper to move. During the descent of the sealing block, it will form a sealing cooperation with the second spiral sealing strip. During the descent of the spiral scraper, it will first scrape off the impurities in the interlayer between the first noise reduction cover and the second noise reduction cover, and finally form a sealing cooperation with the first spiral sealing strip.

[0016] S2. The valve stem descends simultaneously with the support linkage tooth pressure plate. The descending tooth pressure plate meshes with the gear, and the gear's rotation drives the rotating shaft to rotate. The rotating shaft's rotation drives the main bevel gear and the driven bevel gear to mesh, causing the drive rod to rotate the valve plate until it finally rotates 90°. After the valve plate rotates to the specified angle, it will seal and isolate the right-side connecting pipe.

[0017] The valve stem descends, which in turn moves the push-pull rod downwards via the sealing block. The push-pull rod then moves the conical sealing head downwards, causing it to disengage from the drainage port. Simultaneously, the descending conical sealing head also moves the lifting frame downwards. After the lifting frame descends, the traction ring loses its tension and is pulled downwards by the sealing block for elastic reset. The reset sealing block forms a tight seal with the discharge port. During the periods when the valve body is closed, the right-side connecting pipe is closed, the drainage port is open, and the discharge port is closed, impurities scraped from inside the valve body and some fluid media will mix and flow into the collection box for temporary storage.

[0018] S3. When the valve stem engages with the gear through the descending linkage tooth pressure plate, the tooth pressure plate will press the vertical plate to descend. When the vertical plate descends, it will first press and contact the pressing frame. After the pressing frame is pressed, it will drive the inclined block to push to the right. The inclined block will press and cooperate with the movable plate to the right. By pressing with the movable plate, it will cause the locking block to retract into the mounting frame so that the locking block and the gear can disengage from the limit engagement. After the tooth pressure plate finishes engaging with the gear, the locking block will continue to engage and limit the gear through elastic reset.

[0019] S4. When the valve body is started, the gas storage chamber is closed. After the gas storage chamber is closed, the gas supply to the inside of the gas storage chamber will stop. After the gas storage chamber loses gas, the pressure cover will elastically reset and rise. The pressure cover rises and moves the valve stem upward. The valve stem drives the sealing block and the spiral scraper to rise. When the sealing block and the spiral scraper rise, they will disengage from the sealing engagement with the second spiral sealing strip and the first spiral sealing strip. At this time, the inside of the valve body is in a smooth state. At this time, the fluid medium inside the right connecting pipe will flow into the bottom of the first noise reduction cover and the second noise reduction cover, and through the diversion noise reduction through several diversion noise reduction holes, the fluid medium inside the right connecting pipe will be transported to the inside of the left connecting pipe.

[0020] During the valve stem reset and rise, the valve plate returns to the open state accordingly, the conical sealing head continues to seal with the drain port, and the sealing block returns to the sealed state with the discharge port. During the period when the sealing block is separated from the discharge port, the impurities and fluids remaining inside the collection box will be discharged to the outside.

[0021] Preferably, in step three, the length of the extrusion vertical plate is greater than that of the toothed pressure plate. The extrusion vertical plate can make pre-extrusion contact with the extrusion frame due to its length, thereby pre-releasing the limiting engagement of the gear and promoting the smooth and orderly meshing of the gear with the toothed pressure plate in the future.

[0022] This invention provides a regulating valve with good noise reduction performance and its usage method. Compared with existing technologies, it has the following advantages:

[0023] (1) The regulating valve with good noise reduction performance, by setting a noise reduction and impurity removal mechanism, a flow diversion and discharge mechanism and a limiting mechanism between the valve body and the connecting pipe, enables the valve body to remove impurities from the interlayer between the first noise reduction cover and the second noise reduction cover through the coordinated cooperation of the noise reduction and impurity removal mechanism, the flow diversion and discharge mechanism and the limiting mechanism during the alternation of start and stop actions, so as to avoid impurities blocking the interlayer between the first noise reduction cover and the second noise reduction cover, which would affect the effect of the first noise reduction cover and the second noise reduction cover on the diversion and noise reduction of the fluid medium. At the same time, while removing impurities from the interlayer between the first noise reduction cover and the second noise reduction cover, the mixed impurities of the fluid medium are blocked, diverted and discharged to prevent impurities from being inside the valve body and affecting subsequent use. At the same time, the valve plate inside the flow diversion and discharge mechanism is stably limited to prevent the valve plate from swinging its opening angle due to the flow of the fluid medium.

[0024] (2) The regulating valve with good noise reduction performance, by setting a lifting frame at the bottom of the conical sealing head to be used in conjunction with the traction ring, enables the conical sealing head to promote the cooperation between the outlet and the conical sealing head and the cooperation between the sealing block and the discharge port through the linkage with the valve stem. It can simultaneously present a closed cooperation and a closed disengagement cooperation or a closed disengagement cooperation and a closed cooperation. Through the alternation of the two cooperations, it can temporarily store and discharge impurities and part of the mixed fluid medium inside the valve body at different stages without affecting the valve body's sealed environment, so that the mixed impurity fluid medium can be stripped to the outside of the valve body.

[0025] (3) The regulating valve with good noise reduction performance has a valve plate installed inside the right connecting pipe. The valve plate can change angle in conjunction with the sealing cooperation between the sealing block and the second loop sealing strip. The angle change can block the inside of the right connecting pipe. Through the joint sealing cooperation between the sealing block and the valve plate, the local fluid medium with concentrated impurities inside the valve body can be isolated so that it can be discharged quantitatively in the future.

[0026] (4) The regulating valve with good noise reduction performance, by setting a second limiting sleeve, a second reset spring and a second telescopic rod at the bottom of the collection box to be used in conjunction with the sealing block, enables the sealing block to be reset autonomously through the elastic cooperation between the second limiting sleeve, the second reset spring and the second telescopic rod, thereby forming a sealing cooperation with the discharge port. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0028] Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 3 This is a cross-sectional view of the valve body structure of the present invention;

[0030] Figure 4 For the present invention Figure 3 A magnified view of a section at point B in the middle;

[0031] Figure 5 This is a schematic diagram of the noise reduction and impurity removal mechanism structure of the present invention;

[0032] Figure 6 This is an unfolded view of the internal structure of the noise reduction and impurity removal mechanism of the present invention;

[0033] Figure 7 This is a schematic diagram of the drainage mechanism structure of the present invention;

[0034] Figure 8 This is a top view of the traction ring and lifting frame structure of the present invention;

[0035] Figure 9 This is a schematic diagram of the separation mechanism structure of the present invention;

[0036] Figure 10 This is a schematic diagram of the limiting mechanism structure of the present invention;

[0037] Figure 11 This is an unfolded view of the internal mechanism of the second limiting sleeve of the present invention.

[0038] In the diagram: 1. Valve body; 2. Connecting pipe; 3. Pneumatic regulating mechanism; 301. Air storage chamber; 302. Airflow control solenoid valve; 303. Air guide pipe; 304. Pressure cap; 305. Telescopic spring; 4. Valve stem; 5. Noise reduction and impurity removal mechanism; 501. First noise reduction cover; 502. Second noise reduction cover; 503. Diversion noise reduction hole; 504. Sealing block; 505. Rotary scraper; 506. First rotary sealing strip; 507. Second rotary sealing strip; 508. Fixing plate; 509. Guide groove; 6. Drainage mechanism; 601. Collection box; 602. Discharge port; 603. Sealing block; 604. Traction ring; 605. Push-pull rod 606. Drainage port; 607. Conical sealing head; 608. Lifting frame; 609. Separating mechanism; 6091. Drive rod; 6092. Valve plate; 6093. Driven bevel gear; 6094. Rotating shaft; 6095. Main bevel gear; 6096. Gear; 6097. Gear pressure plate; 7. Limiting mechanism; 701. Mounting frame; 702. Tension spring; 703. Locking block; 704. Extrusion frame; 705. Inclined block; 706. Movable plate; 707. Extrusion vertical plate; 8. First limiting sleeve; 9. First return spring; 10. First telescopic rod; 11. Second limiting sleeve; 12. Second return spring; 13. Second telescopic rod. Implementation

[0039] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Example 1

[0040] Please see Figure 1-11 This invention provides a technical solution: a regulating valve with good noise reduction performance, including a valve body 1 and a connecting pipe 2. Two connecting pipes 2 are provided, and the two connecting pipes 2 are respectively connected to the two sides of the valve body 1. A pneumatic regulating mechanism 3 is provided on the top of the valve body 1. A valve stem 4 is movably provided inside the pneumatic regulating mechanism 3, and one end of the valve stem 4 slides and extends into the interior of the valve body 1. The pneumatic regulating mechanism 3 includes an air storage chamber 301, which is fixedly provided on the top of the valve body 1 by a bracket. A pressure cap 304 is slidably provided inside the air storage chamber 301, and the top of the inner cavity of the pressure cap 304 is fixedly connected to the top of the valve stem 4. A telescopic spring 305 is fixedly connected between the top of the inner cavity of the pressure cap 304 and the bottom of the inner cavity of the air storage chamber 301, and two telescopic springs 305 are symmetrically arranged. An airflow control solenoid valve 302 is fixedly connected to the top of the valve body 1, and an air guide pipe 303 connects the airflow control solenoid valve 302 and the air storage chamber 301.

[0041] As a preferred embodiment: To facilitate the removal of impurities from the interlayer between the first noise reduction cover 501 and the second noise reduction cover 502, a noise reduction and impurity removal mechanism 5 is provided inside the valve body 1. The noise reduction and impurity removal mechanism 5 includes a first noise reduction cover 501, which is fixedly disposed at the top of the inner cavity of the valve body 1. A second noise reduction cover 502 is fixedly connected to the top of the inner cavity of the valve body 1 and inside the first noise reduction cover 501. Several diversion noise reduction holes 503 are opened on the surfaces of both the second noise reduction cover 502 and the first noise reduction cover 501. A sealing block 504 is fixedly connected to the bottom end of the valve stem 4 and inside the second noise reduction cover 502. The first noise reduction cover 501 and the second noise reduction cover 502 are slidably disposed between each other. A spiral scraper 505 is used in conjunction with the sealing block 504. A first spiral sealing strip 506 used in conjunction with the spiral scraper 505 is fixedly provided on the inner surface of the first noise reduction cover 501 and the outer surface of the second noise reduction cover 502. A second spiral sealing strip 507 used in conjunction with the sealing block 504 is fixedly connected to the inner surface of the second noise reduction cover 502. Fixing plates 508 are fixedly connected to the front and rear sides of both sides of the sealing block 504. One side of the fixing plate 508 passes through the second noise reduction cover 502 and is fixedly connected to the side of the inner cavity of the spiral scraper 505. Guide grooves 509 that slide and adapt to the fixing plate 508 are provided on the front and rear sides of both sides of the second noise reduction cover 502.

[0042] As a preferred embodiment: To facilitate the drainage of local fluid media containing impurities, a drainage mechanism 6 is provided between the noise reduction and impurity removal mechanism 5 and the valve body 1. The drainage mechanism 6 includes a collection box 601, which is fixedly disposed at the bottom of the valve body 1. A discharge port 602 is provided at the bottom of the collection box 601. A sealing block 603 adapted to the discharge port 602 is slidably disposed inside the collection box 601. Second limiting sleeves 11 are fixedly connected to both sides of the bottom of the collection box 601. Second return springs 12 are fixedly connected to the inner wall of the second limiting sleeves 11. Second telescopic rods 13 are fixedly connected to the bottom end of the second return springs 12. 3. Both sides are fixedly connected to the bottom of the sealing block 603 by brackets. The top of the sealing block 603 is fixedly connected to the traction ring 604 by brackets. The bottom of the sealing block 504 is fixedly connected to the push-pull rod 605. One end of the push-pull rod 605 passes through and slides into the inside of the collection box 601. The end of the push-pull rod 605 that extends into the inside of the collection box 601 is fixedly connected to the conical sealing head 607. The bottom of the inner cavity of the valve body 1 is provided with a drainage port 606 that is compatible with the conical sealing head 607. The bottom of the conical sealing head 607 is fixedly connected to the lifting frame 608 that is compatible with the traction ring 604. A separation mechanism 609 is provided between the valve body 1 and the right connecting pipe 2.

[0043] The separating mechanism 609 includes a drive rod 6091, which is rotatably mounted on the top of the right connecting pipe 2 via a bearing. One end of the drive rod 6091 extends into the interior of the right connecting pipe 2. A valve plate 6092 is fixedly connected to the end of the drive rod 6091 that extends into the interior of the right connecting pipe 2. A driven bevel gear 6093 is fixedly connected to one end of the drive rod 6091 and located at the top of the right connecting pipe 2. A rotating shaft 6094 is rotatably connected to the top of the valve body 1 via a bearing. A master bevel gear 6095 that meshes with the driven bevel gear 6093 is fixedly connected to one end of the rotating shaft 6094. A gear 6096 is fixedly connected to the other end of the rotating shaft 6094. A tooth pressure plate 6097 that meshes with the gear 6096 is fixedly connected to one side of the valve stem 4 via a bracket.

[0044] As a preferred embodiment: To prevent the valve plate 6092 from swinging at any angle, a limiting mechanism 7, which is used in conjunction with the drainage mechanism 6, is provided between the valve body 1 and the valve stem 4. The limiting mechanism 7 includes a mounting frame 701, and two mounting frames 701 are provided. Both mounting frames 701 are fixedly mounted on the top of the valve body 1 by a bracket. A tension spring 702 is fixedly connected to the inner wall of the mounting frame 701. One end of the tension spring 702 is fixedly connected to a locking block 703 that engages with the gear 6096. A compression frame 704 is elastically provided on the top of the valve body 1 by a bracket. The first limiting sleeve 8 is fixedly connected to the part via a bracket. The inner wall of the first limiting sleeve 8 is fixedly connected to the first return spring 9. One end of the first return spring 9 is fixedly connected to the first telescopic rod 10. One end of the first telescopic rod 10 is fixedly connected to the rear side of the extrusion frame 704 via a bracket. The top and bottom of one side of the extrusion frame 704 are fixedly connected to the inclined block 705. One side of the locking block 703 is fixedly connected to the movable plate 706 that is used in conjunction with the inclined block 705. One side of the toothed pressure plate 6097 is fixedly connected to the extrusion vertical plate 707 that is used in conjunction with the extrusion frame 704 via a bracket.

[0045] This invention also discloses a method for using a regulating valve with good noise reduction performance, specifically including the following steps:

[0046] S1. When valve body 1 is closed, the airflow control solenoid valve 302 is activated. The airflow control solenoid valve 302 supplies air and pressurizes the air storage chamber 301 through the air guide pipe 303. After the air storage chamber 301 is pressurized, the pressure cover 304 will descend and drive the valve stem 4 to move. The descent of the valve stem 4 will drive the sealing block 504 and the loop scraper 505 to move. During the descent of the sealing block 504, it will form a sealing cooperation with the second loop sealing strip 507. During the descent of the loop scraper 505, it will first scrape off the impurities in the interlayer between the first noise reduction cover 501 and the second noise reduction cover 502, and finally form a sealing cooperation with the first loop sealing strip 506.

[0047] S2. As the valve stem 4 descends, it also descends via the bracket linkage toothed pressure plate 6097. The descending toothed pressure plate 6097 engages with the gear 6096. The gear 6096, through engagement, rotates and drives the rotating shaft 6094 to rotate. The rotation of the rotating shaft 6094 drives the main bevel gear 6095 and the driven bevel gear 6093 to engage, causing the drive rod 6091 to drive the valve plate 6092 to rotate until it finally rotates 90°. After the valve plate 6092 rotates to the specified angle, it will block and isolate the right-side connecting pipe 2.

[0048] As the valve stem 4 descends, it also drives the push-pull rod 605 to move downwards via the sealing block 504. The push-pull rod 605 drives the conical sealing head 607 to move downwards. The conical sealing head 607 will disengage from the sealing fit with the drain port 606 as it moves downwards. At the same time, the descending of the conical sealing head 607 will also drive the lifting frame 608 to descend. After the lifting frame 608 descends, the traction ring 604 will be pulled downwards by the sealing block 603 due to the loss of tension, and the sealing block 603 will be elastically reset. The reset of the sealing block 603 will form a tight fit with the discharge port 602. During the period when the valve body 1 is closed, the right connecting pipe 2 is closed, the drain port 606 is open, and the discharge port 602 is closed, the impurities scraped inside the valve body 1 and some fluid media will mix and flow into the collection box 601 for temporary storage.

[0049] When valve stem 4 engages with gear 6096 via the descending linkage toothed pressure plate 6097, the toothed pressure plate 6097 will press down on the vertical plate 707 to descend. During descent, the vertical plate 707 will pre-press into contact with the pressing frame 704. After being pressed, the pressing frame 704 will drive the inclined block 705 to the right. The inclined block 705 will press against the movable plate 706, and this pressing will cause the locking block 703 to retract into the mounting frame 701. After the gear 6096 is disengaged from the limiting engagement, the corresponding tooth pressure plate 6097 will continue to engage and limit the gear 6096 after the engagement with the gear 6096 is completed. The clamping block 703 will continue to engage and limit the gear 6096 through elastic reset. The length of the pressing vertical plate 707 is greater than that of the tooth pressure plate 6097. The pressing vertical plate 707 can make pre-press contact with the pressing frame 704 due to its length, thereby pre-releasing the limiting engagement of the gear 6096 and promoting the smooth and orderly engagement of the gear 6096 with the tooth pressure plate 6097 in the future.

[0050] S4. When valve body 1 is started, the gas storage chamber 301 is closed. After the gas storage chamber 301 is closed, the gas supply to the inside of the gas storage chamber 301 will stop. After the gas storage chamber 301 loses gas, the pressure cover 304 will elastically reset and rise. The rise of the pressure cover 304 will move the valve stem 4 upward. The valve stem 4 will drive the sealing block 504 and the circular scraper 505 to rise. When the sealing block 504 and the circular scraper 505 rise, they will disengage from the sealing engagement with the second circular sealing strip 507 and the first circular sealing strip 506. At this time, the inside of valve body 1 is in a smooth state. At this time, the fluid medium inside the right connecting pipe 2 will flow into the bottom of the first noise reduction cover 501 and the second noise reduction cover 502, and through the diversion and noise reduction of several diversion noise reduction holes 503, the fluid medium inside the right connecting pipe 2 will be transported to the inside of the left connecting pipe 2.

[0051] During the reset and rise of valve stem 4, valve plate 6092 returns to the open state accordingly, conical sealing head 607 continues to seal with drain port 606, and sealing block 603 returns to the sealed disengagement state with discharge port 602 accordingly. During the period when sealing block 603 is disengaged from discharge port 602, impurities and fluids stored inside collection box 601 will be discharged to the outside.

[0052] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A regulating valve with good noise reduction performance, comprising a valve body (1) and connecting pipes (2), wherein two connecting pipes (2) are provided, and the two connecting pipes (2) are respectively connected to both sides of the valve body (1), characterized in that: A pneumatic adjustment mechanism (3) is provided on the top of the valve body (1). A valve stem (4) is movably provided inside the pneumatic adjustment mechanism (3). One end of the valve stem (4) slides and extends into the interior of the valve body (1). A noise reduction and impurity removal mechanism (5) is provided inside the valve body (1). A flow drainage mechanism (6) is provided between the noise reduction and impurity removal mechanism (5) and the valve body (1). A limiting mechanism (7) is provided between the valve body (1) and the valve stem (4) and is used in conjunction with the flow drainage mechanism (6). The noise reduction and impurity removal mechanism (5) includes a first noise reduction cover (501), which is fixedly disposed at the top of the inner cavity of the valve body (1). A second noise reduction cover (502) is fixedly connected to the top of the inner cavity of the valve body (1) and inside the first noise reduction cover (501). Several diversion noise reduction holes (503) are opened on the surfaces of the second noise reduction cover (502) and the first noise reduction cover (501). A sealing block (504) is fixedly connected to the bottom end of the valve stem (4) and inside the second noise reduction cover (502). A spiral scraper (505) matching the sealing block (504) is slidably disposed between the first noise reduction cover (501) and the second noise reduction cover (502). The inner surface of the first noise reduction cover (501) and the outer surface of the second noise reduction cover (502) are both fixedly provided with a first spiral sealing strip (506) that is used in conjunction with the spiral scraper (505). The inner surface of the second noise reduction cover (502) is fixedly connected with a second spiral sealing strip (507) that is used in conjunction with the sealing block (504). The front and rear sides of the sealing block (504) are fixedly connected with fixing plates (508), and one side of the fixing plate (508) penetrates through the second noise reduction cover (502) and is fixedly connected to the side of the inner cavity of the spiral scraper (505). The front and rear sides of the second noise reduction cover (502) are provided with guide grooves (509) that are slidably adapted to the fixing plates (508). The drainage mechanism (6) includes a collection box (601), which is fixedly installed at the bottom of the valve body (1). A discharge port (602) is provided at the bottom of the collection box (601). A sealing block (603) adapted to the discharge port (602) is slidably installed inside the collection box (601). A traction ring (604) is fixedly connected to the top of the sealing block (603) by a bracket. A push-pull rod (605) is fixedly connected to the bottom of the sealing block (504). One end of the push-pull rod (605) extends through and slides into the interior of the collection box (601). A conical sealing head (607) is fixedly connected to one end of the push-pull rod (605) extending into the interior of the collection box (601). A drainage port (606) adapted to the conical sealing head (607) is opened at the bottom of the inner cavity of the valve body (1). A lifting frame (608) adapted to the traction ring (604) is fixedly connected to the bottom of the conical sealing head (607). A separation mechanism (609) is provided between the valve body (1) and the right connecting pipe (2). The separating mechanism (609) includes a drive rod (6091), which is rotatably mounted on the top of the right connecting pipe (2) via a bearing, and one end of the drive rod (6091) extends into the interior of the right connecting pipe (2). A valve plate (6092) is fixedly connected to one end of the drive rod (6091) extending into the interior of the right connecting pipe (2). A bevel gear (6093) is fixedly connected to one end of the drive rod (6091) and located at the top of the right connecting pipe (2). A rotating shaft (6094) is rotatably connected to the top of the valve body (1) via a bearing. A master bevel gear (6095) meshing with the bevel gear (6093) is fixedly connected to one end of the rotating shaft (6094). A gear (6096) is fixedly connected to the other end of the rotating shaft (6094). A tooth pressure plate (6097) meshing with the gear (6096) is fixedly connected to one side of the valve stem (4) via a bracket. The limiting mechanism (7) includes a mounting frame (701), two mounting frames (701) are provided, and both mounting frames (701) are fixedly mounted on the top of the valve body (1) by a bracket. A tension spring (702) is fixedly connected to the inner wall of the mounting frame (701). A locking block (703) that is matched with the gear (6096) is fixedly connected to one end of the tension spring (702). A pressing frame (704) is elastically mounted on the top of the valve body (1) by a bracket. An inclined block (705) is fixedly connected to the top and bottom of one side of the pressing frame (704). A movable plate (706) that is matched with the inclined block (705) is fixedly connected to one side of the locking block (703). A pressing vertical plate (707) that is matched with the pressing frame (704) is fixedly connected to one side of the toothed pressing plate (6097) by a bracket.

2. The regulating valve with good noise reduction performance according to claim 1, characterized in that: The pneumatic adjustment mechanism (3) includes an air storage chamber (301), which is fixedly mounted on the top of the valve body (1) by a bracket. A pressure cap (304) is slidably mounted inside the air storage chamber (301), and the top of the inner cavity of the pressure cap (304) is fixedly connected to the top of the valve stem (4). A telescopic spring (305) is fixedly connected between the top of the inner cavity of the pressure cap (304) and the bottom of the inner cavity of the air storage chamber (301), and two telescopic springs (305) are symmetrically arranged. An airflow control solenoid valve (302) is fixedly connected to the top of the valve body (1), and an air guide pipe (303) is connected between the airflow control solenoid valve (302) and the air storage chamber (301).

3. The regulating valve with good noise reduction performance according to claim 2, characterized in that: The top of the valve body (1) is fixedly connected to a first limiting sleeve (8) via a bracket. The inner wall of the first limiting sleeve (8) is fixedly connected to a first return spring (9). One end of the first return spring (9) is fixedly connected to a first telescopic rod (10), and one end of the first telescopic rod (10) is fixedly connected to the rear side of the extrusion frame (704) via a bracket.

4. The regulating valve with good noise reduction performance according to claim 3, characterized in that: The bottom of the collection box (601) is fixedly connected to two sides of a second limiting sleeve (11). The inner wall of the second limiting sleeve (11) is fixedly connected to a second return spring (12). The bottom end of the second return spring (12) is fixedly connected to a second telescopic rod (13). The two second telescopic rods (13) are fixedly connected to the bottom sides of the sealing block (603) respectively through brackets on opposite sides.

5. The method of using a regulating valve with good noise reduction performance according to claim 4, characterized in that: Specifically, the following steps are included: S1. When the valve body (1) is closed, the airflow control solenoid valve (302) is activated. The airflow control solenoid valve (302) supplies air and pressurizes the inside of the gas storage chamber (301) through the air guide pipe (303). After the gas storage chamber (301) is pressurized, the pressure cover (304) will descend and drive the valve stem (4) to move. The valve stem (4) descends and drives the sealing block (504) and the spiral scraper (505) to move. During the descent of the sealing block (504), it will form a sealing cooperation with the second spiral sealing strip (507). During the descent of the spiral scraper (505), it will first scrape off the impurities in the interlayer between the first noise reduction cover (501) and the second noise reduction cover (502), and finally form a sealing cooperation with the first spiral sealing strip (506). S2, the valve stem (4) descends and also descends through the bracket linkage tooth pressure plate (6097). The descending tooth pressure plate (6097) meshes with the gear (6096). The gear (6096) rotates through meshing, which drives the rotating shaft (6094) to rotate. The rotation of the rotating shaft (6094) drives the main bevel gear (6095) and the driven bevel gear (6093) to mesh, and causes the drive rod (6091) to drive the valve plate (6092) to rotate until it finally rotates 90°. After the valve plate (6092) rotates to the specified angle, it will block and isolate the right connecting pipe (2). As the valve stem (4) descends, it will also drive the push-pull rod (605) to move downward through the sealing block (504). The push-pull rod (605) will drive the conical sealing head (607) to move downward. The conical sealing head (607) will disengage from the drainage port (606) as it moves downward. At the same time, the conical sealing head (607) will also drive the lifting frame (608) to descend. After the lifting frame (608) descends, the traction ring (604) will be pulled downward by the sealing block (603) to perform elastic reset due to the loss of tension. The reset of the sealing block (603) will form a sealed fit with the discharge port (602). During the period when the valve body (1) is closed, the right connecting pipe (2) is closed, the drainage port (606) is open, and the discharge port (602) is closed, the impurities scraped inside the valve body (1) and some fluid media will mix and flow into the collection box (601) for temporary storage. S3. When the valve stem (4) meshes with the gear (6096) through the descending linkage tooth pressure plate (6097), the tooth pressure plate (6097) will press the vertical plate (707) to descend. When the vertical plate (707) descends, it will press and contact the pressing frame (704) in advance. After the pressing frame (704) is pressed, it will drive the inclined block (705) to push to the right. The inclined block (705) will press and cooperate with the movable plate (706) to the right. By pressing with the movable plate (706), the locking block (703) will retract into the mounting frame (701) so that the locking block (703) and the gear (6096) will disengage from the limit engagement. After the tooth pressure plate (6097) and the gear (6096) have finished meshing, the locking block (703) will continue to lock and limit the gear (6096) through elastic reset. S4. When the valve body (1) is started, the gas storage chamber (301) is closed. After the gas storage chamber (301) is closed, the gas supply to the inside of the gas storage chamber (301) will stop. After the gas is lost inside the gas storage chamber (301), the pressure cover (304) will elastically reset and rise. The rise of the pressure cover (304) will move the valve rod (4) upward. The valve rod (4) will drive the sealing block (504) and the circular scraper (505) to rise. 05) When rising, it will disengage from the sealing fit of the second loop sealing strip (507) and the first loop sealing strip (506). At this time, the inside of the valve body (1) is in a smooth state. At this time, the fluid medium inside the right connecting pipe (2) will flow into the bottom of the first noise reduction cover (501) and the second noise reduction cover (502), and through the diversion and noise reduction of several diversion noise reduction holes (503), the fluid medium inside the right connecting pipe (2) will be transported to the inside of the left connecting pipe (2). During the reset and rise of the valve stem (4), the valve plate (6092) returns to the open state accordingly, the conical sealing head (607) continues to seal with the drain port (606), and the sealing block (603) returns to the sealed disengagement state with the discharge port (602). During the period when the sealing block (603) is disengaged from the discharge port (602), the impurities and fluids stored inside the collection box (601) will be discharged to the outside.

6. The method of using a regulating valve with good noise reduction performance according to claim 5, characterized in that: In step three, the length of the extrusion vertical plate (707) is greater than that of the tooth pressure plate (6097). The extrusion vertical plate (707) can make pre-extrusion contact with the extrusion frame (704) due to its length, thereby pre-releasing the limiting fit of the gear (6096) and promoting the smooth and orderly meshing of the gear (6096) with the tooth pressure plate (6097) in the future.

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